Episodes (13)
The Bratty Sister's Secret
After his father remarries, Kouta Takamura is introduced to his new stepsister, Aika, and the two immediately clash, forming a mutual dislike. However, as they begin living together, Kouta discovers that Aika has a secret life of bringing boys over to her room whenever their parents are away. To keep her mother from finding out, Aika threatens Kouta, establishing a tense and complicated relationship between the new siblings.
Beach Day Blunders
Kouta is tasked with guarding Aika during a trip to the beach, where Aika claims he is her boyfriend to ward off a persistent pickup artist. This leads to Aika teasing Kouta with provocative behavior until a wave washes away her swimsuit. In a panic, Aika forces Kouta to give up his own underwear to cover herself, leaving him exhausted by her bratty demands.
The Half-Measure Compromise
Following their family trip, Aika begins spending more time in Kouta's room, eventually pressuring him into sexual intimacy. Kouta attempts to set boundaries by suggesting a compromise that excludes penetration, but the resulting tension only makes the experience more intense and agonizing for him. Their risky encounter is interrupted when their father unexpectedly returns home.
Hidden Tears
After Aika lures Kouta to an abandoned building to seduce him, Kouta resists her advances and questions her desperate need for sexual validation. This confrontation leads to a rare moment of vulnerability for Aika, who breaks down in tears after a gentle gesture from Kouta, hinting at deeper emotional wounds beneath her provocative behavior.
Unveiling the Past
While sharing an intimate moment in the bath, Aika opens up to Kouta about the traumatic event from her past that shaped her current behavior and fear of loneliness. Kouta's compassionate and non-judgmental response provides Aika with emotional validation, deepening the bond between them.
